Electrolytic Partial Fluorination of Organic Compounds.79. Anodic Fluorination of Spiropyrazoline-5,3'-chroman-4-ones and Thiochromanone Analogues.A Route to Aroyl Fluoride Derivatives

摘要

Anodic fluorination of spiropyrazole-5,3'-chroman-4-ones and their thiochromanone analogues in dimethoxyethane containing Et4NF-4HF resulted in ring opening of spiroheterocycles,which led to the formation of (5-pyrazolyl)methyl o-carbomethoxyphenyl ethers and their thioether analogues via benzoyl fluoride derivatives.